Coffee-percolator.



REDTBAUBR.

COFFEE PBRGOLATOR. APPLIUATION FILEDAUG. 27, 1908.

Patented Feb. L `1910.

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Specification of Letters Patent.

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Application led August 2'?, 1908. Serial No. l150,564.

Toall whom 'it maytconccm: Y

Be itl known that ll, PnrnoNnLLa EDT- Ananna, a citizen of the United States, and a resident of Chicago, in the county'of Cook and State of Illinois, have invented certain new and useful improvements in CoffeevPercolators, of which thel following isa clear, full, and exact description.

My invention relates to coffee ots vand more particularly .to that class yo devices known as coffee -pereolators Aslis well known coHee should not be This has been accomplishedn various Ways,

such for example as holding the ground coffee in a muslin bag or sack and allowing the Water to pass through the same. While this is a simple method it has many disadvantages, the most prominent of Which is that, l

after several uses the; Woven fabric of the bag becomes so thoroughly saturated or impregnated with' the injurious sediment from the grounds, that it is' rendered unsanitary and extremely injurious to the health. During my experiments I have `ascertained that the timeof percolation should he regulated in proportion to the amount of ground cof fee placed in the receptacle so that theliquid will have passed through said ground coffee in not more than ten minutes. As soon as hot or boiling Water is poured on ground poffee the small granulations begin to swell for certainperiod and as they become chilled the tannin or tannic acid of the cof fee bean is liberated. This l have found' will occur under ordinary circumstances.in about ten minutes after the boiling Water has been pound on the ground coffee. Therefore if the percolator can be adjusted in proportion to he amount of ground coffee (pulverized) so that the boiling Water after being poured aver the same Will have percolated through before the reaction takes `place the beverage will be pure, clean, and healthful.

@ne of the objects, therefore, of my in! vention is to provide a percolator whereinA the flow of Water through the filter or sieve shall be regulated according to a fixed proportion or made adjustable to various proportions. l 4

Another object is to provide an econom-4 ical and simply constructed device that is 'j easy to operate, Will not get out of order,

and which can be thoroughly cleansed and rendered entirely sanitary. This I accomplish by the means hereinafter fully de-V scribed and as moreparticularly pointed out inthe Claims.

In Vthe drawings -Figure l, is a 4central Vertical section of my improved percolator showing the same supported upon the top of an ordinary coffee pot, Whichlatter 1s shown in fragmental section. Fig. 2, is a frag mental front elevation of the lower portion of the Water reservoir, showing the adjusting graduations thereon forregulating the flow of Water. Fig. 3, is a vertical front elevation showing my -improved percolator strainer in detail. Fig. Ll, is a fragmental View, in central vertical' section,'shovving a modified form of my percolator.`

Referring 4to the drawings, A represents a suitablev reservoir or Water receptacle that is preferably made cylindrical in shape and is open 'at both ends. The lower portlon of this receptacle is perferably' tapered or conically shaped so as to form a reduced portion or throat a., While the upper open end is provided with a suitable lid.` Mediate the top, and bottom of'this receptacle the walls thereof areprovided with asmall annular bead Zn that is adapted to support a dish shaped spreader plate B.` The throat a is adapted to be inserted into and surrounded by a percolator cap or filter C that is preferably slightly greater in diameter than the circumference of said throat and has a' plurality of small perforations c in its side walls. The bottom of this percolator cap, however, is imperforatc and preferably made dome shape or conical so as te shed to the sides of the cap. edge of the cap is secured to andsurroundedvby an annular plate D (preferably T 'shaped in cross section) that is of such diameter that its outer edges extend to and project over the edge of an ordinary colfee pot E. The exterior surface of throat a is provided With'graduations, as shown in Fig. Q that indicate the relative adjustment of the percolator cap C on the lower end of the Y Water Vreceptacle according to the quantity of Water used. t

In operation,when the required amount of coffeehas been placed in the percolator cap, the same is slid onto the throat to the graduation indicating the number of cups of Water to be placed therein, and then the The upper spreader plate B is same is mounted upon the coffee pot. The then placed in position, andA thewaterpoured into the top of the receptacle. This will cause the water to spread over the 'coffee grounds and percolate through the 'same and out through the per- 'forationsc into the pot. Owlng to the dome shape of bottom of percolator cap, the water will not settle in thecenterbut will be distributed or shed toward the` sides of same so that lnone will remain in Contact with the grounds.

,In the modication I' have shown in Fig.

4 the percolator cap is made integralwith the reservoir or vwater receptacle by closing the lower end of the throat with a dome 4shaped bottom h and by perforating the side vwalls thereof. In order that'the receptacle may be placedupon coifee pot the lower edge of reservoil` is provided at the place where it is tapered to form the throat, with i 1 an outwardly extending flange g, substancoee grounds may be adjusted with respect y to the quantity of coffee to be brewed.

What I claim a's new is 1. The combination witliacoifee pot, of .superimposed percolating receptacle provided with a depending extension adapted to enter said coffee pot, a percolator cap my invention, I do not de` adapted to telescope with said yextension -and having its lower end closed and the sides adjacent to and surrounding said eX- tension being perforated.

2. The combination with a coffee pot, of .a superimposed percolating chamben provided Witha de ending extension adapted to enter said co ee pot and provided with graduations .on the extension of its ,side walls, a percolator cap ada ted to telescope with` said extension and a justable thereon tom of said ca being closed and the sides adjacent to an surrounding said extension being perforated.

3. The combination with a coffee pot, of la superimposed percolating chamber provided with a depending extension adapted to enter saidcoffee pot2 and a percolator ca adapted to telescope with said extension and havin its lower end closed with a .conicalshape bottom and its sides adjacent to said bottom perforated. j

4. The combination witha coifee pot, of a superimposed percolating chamber provided witha de ending extension adapted to enter said co ce pot and provided with graduations on the extension of its side Walls, a percolator cap adapted to telescope with said extension and adjustable thereon W`ith relation to said graduations, the bottom of said cap being conical-sha ed, and a spreader-plate insaid rcceptace above said extension.

In testimony whereof I have hereunto set my hand and seal this 24th day of August, A. D., 1908.

PETRONELLA EDTBAUER. [1.. 5.] Witnesses:

EDMND EDTBAUER,

E. K. LUNDYL with relation to said graduations, the bot`v 

